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(Hommel.) W. Q DOWNWZARD.

GAS REGULATOR. No. 546,131. Patented Sept. 10,1895.

I l i i q u i E I m max? moewtoz wbb/www i Sammy il lNiTnD STATES PATnNr erica@ WILLIAM C. DOW'NWARD, OF IVILMINGTON, DELAVARE, ASSIGNOR OF ONE- I-IALF TO ALFRED DOVNVARD, OF SAME PLACE.

GAS-REGULATOR.

SBECIFICATION forming part of Letters Patent. No. 546,181, dated September 10, 1895.

Application filed July 13, 1995- Seral No. 555,875. (No model.)

To a/ZZ whom it may concern:

Be it known that I, WILLIAM C. DOWN- WARD, a citizen of the United States, residing at Vilmington, in the county of New Castle and State of Delaware, have invented certain new and useful Improvements in Gas-Regulators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in 1o the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to an improvement in gas-regulators, the purpose of which is to regulate or govern the supply of gas under pressure.

The object of my invention is to produce a 2o construction which will afford great steadiness in the action of the valve, whereby a uniform pressure of gas is attained throughout the entire system and one which will automatically shut oft the gas when the press- 2 5 ure becomes too great.

The invention consists in the construction and combination of parts as hereinafter fully descrihed,and pointed out in the claims. i

In the drawings, Figure lis a central verti- 3c cal section of my improved device, and Figs. 2, 3, and a are detail views of parts of the same.

Referring to the drawings, the numeralv 1 represents the casing which is secured tothe end of the supply-pipe or gas-main 2 and has its upper end llared or enlarged, as shown at 3. Rising within the casing is a tube 5, which is secu red in the lower end of the same and terminates just below an internal annular 4o flange 4 of the casing. The external diameter of the tube is less than the internal diameter of the casing, so that a chamber 6 is provided for the free circulation of gas from the tube through the outlet-pipe 7, extending from the side of the casing below the llange 4t and the end of the tube 5. A pipe or nozele 8 is screwed into the openingin the flange et, and its upper end projects into the flared portion of the casing. Within the flared por- 5o tion of the casing is a reservoir-float 10, the

upper end of which extends over the end of the nozzle and the lower end of which is open and contracted and extends downward between the tube and the casing. Mercury or its equivalent is poured in the chamber formed around the lower end of the pipe S, as clearly shown at 1l, and forms a liquid seal around the lower end ot the float, providing an absolutely air-tight joint.

To prevent the mercury entering" the pipe 6e S in case the regulator should receive a shock orjar, I provide an annular guard or shield 12 around the upper end of the pipe, which will retain the liquid in place under such circumstances. An internal annular shoulder 55 is formed at theV upper end of the casiugand is designed to accom modatea ring or support 13, towhich I secure the upwardly-projecting arms or supports 14, the upper ends of which are secured to the upper edge of a cup 15, 7c provided with a hollow central cone-shaped boss 16. An annular cork float 17, about the same shape and somewhat smaller than the cup, is seated within the cup and floats in the mercury 1S, placed therein, as shown. A 75 cross-head 19 is secured to the upper side of the cork tloat and has a central perforation, through which a valve-rod 2O is passed. The rod is screw-threaded, as at 2l, and nuts 22 are placed one above and one below the cross Se head to adjustably secure the loat on the rod. The rod passes downward through the cone-shaped boss 16, the float 10, and the tubes 8 and 5, and is secured tothe said float 10 by nuts 23, one above and one below the 85 top of the same. To the lower end of the rod is secured a ball-valve 24 by adj usting-nuts 25, which is adapted to lit against the lower end of the tube 5 and close the same in the operation of the device. A dome or cover 2G 9c is placed over the upper portion of the regulator and is provided with slots or notches 27, adapted to lit over lugs 28 on the sides of the casing, and thereby hold the cover in position.

The operation of the device will be readily understood. Under normal conditions the gas passes from the main or supply pipe up through the pipe 5 and thence out through the outlet-pipe to the burners; but should the roo supply be too great, and :thus create a backpressure, the reservoireiioat willbe forced upward and with it the valve-rod, bringing the valve against the seat 2S) and cutting oft the flow of gas until the pressure is reduced to the proper point. As the pressure is reduced,

lthe reservoir-float returns to its former position.

lleretofore great ditculty has been experienced in arranging a gas-regulatorwhereinr I claim, and desire to secure by Letters Iatk ent, is*

l. In a gas regulator, the combination of a substantially cylindrical casing having a receiving chamberin its lower portion provided with an outlet` on its side, internal annular Liianges at the upper and lower ends of the receiving chamber, a'pipe rising from the lowerilange within `the receiving chamber and extending beyond the outlet, a pipe rising from the upper flange, a valve stem pass. ing through the said pipes and provided at` its lower end with a valve adapted t0 close the lower endof the lower pipe, and a iioat adjustably secured to thevalve stern, extend` ing 4over the Lipper end of the upper pipe and Vhaving its lower end immersed in a liquid seal between the said pipe and the easing.

2. In a gas regulator, having upper and lower chambers, the upper chamber accommodating the gas reservoir or float and being provided with a liquid seal around the lower end of the lioat, a pipe projecting from the lower to the upper chamber' a guard secured around said pipe just below its upper end, said pipe and guard fitting within the gas reservoir or float, the float secured to the valve rod, and ineansfor retaining the valve rod centrally within the gas regulator.

In a gas regulator, the casing having an annular ange at itslower end, and an inner .annular flange about midway its` length, a

receiving chamber between said flanges, an outlet yin the side of the casing, a pipe projecting upwardly from the lower'iiange, a pipe projecting upwardlyT from the upper iiange and rprovided at its upper end with a concave guard, said pipe and guard litting `within a gas reservoir float, the lower portion of which is seated on the upper flange and surrounded'by a liquid seal, and a valve rod adjustably secured to the reservoir float and having a valve at its lower end, and means for retaining the4 valve rod centrally within the regulator when operated by the pressure of gas.

e. The combination ofthe casing having au internal annular flange at itsupper end, supporting arms resting on and rising froinfsaid flange, a cup secured to the upper ends of the said arms, a guiding float, in said cup, a rod secured to and depending from said guiding floatand provided at its lower end with a valve adaptedy to close the-inlet to the casing, and a reservoir iioat. adjustabljT secured to an intermediate point ot' said rod.

5. In a gas regulator the combination with a casing having upper and lower chambers, a kpipe projecting into the lower chamber, an

outlet pipe, a pipe projecting'upwardly from an annular iiange midway the casing into the upper chamber and having an kannular concave-convex guard near its upper end, 

